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Thermal stability and curing kinetics of polycarbosilane fibers ZHENG Chun-man (郑春满), LI Xiao-dong (李效东), WANG Hao (王 浩), ZHU Bin(朱 冰) (State Key Laboratory of New Ceramic Fibers and composites...; Abstract: Thermal stability and curing kinetics of polycarbosilane (PCS) fibers were studied by thermogravimetry (TG), Fourier transform infrared spectroscopy(FT-IR). Curing......
kinetics curves. The phase composition was identified by XRD (Rigaku, Japan). The size distribution of the particles after 25 hydrogen absorption/ desorption cycles was investigated with a Malvern..., 2006, 426: 295-303. [6] FENG F, HAN J W, GENG M M, NORTHWOOD D O. Hydrogen desorption kinetics of LaNi4.7Al0.3 metal hydride electrode using potentiostatic measurements [J]. Solar Energy Mater......
decreases, while the amount of SrAl and AlNi phase increases. The maximum hydrogen absorption capacity is decreased, but the hydrogenation kinetics of the alloy is improved greatly after Ni substitution. Key words: hydrogen storage material; SrAl2 alloy; Zintl phase; kinetics 氢作为......
exhibits a pseudo-first-order kinetics pattern. The effect of initial mass concentration of reactant, adding dosage of hydrogen peroxide, pH of reaction solution, UV light intensity as well as different... decomposition from high to low are NO3-, SO42-, Cl- and CO32-. Key words: paracetamol; UV; hydrogen peroxide; .OH; kinetics 近年来,药物及个人护理品(PPCPs)被发现广泛存在于饮用水中[1-2].由于药物及个人护理品表现出一定的环境激素毒性(内分泌干扰),微生物毒性效应,生物积累性和三致作用......
Hong-xia, ZHANG Meng, WANG Jian-tao, YANG Ya-ti. Kinetics of copper and lead desorption from Lou soil as affected by different desorption agents[J]. Journal of Northwest Sci-Tech University...%.这是因为解吸刚开始时,磁性膨润土上的Cr(Ⅵ)吸附量较高,解吸驱动力大,解吸速度快,经过一段时间后浓度差变小,60 min后,解吸反应趋于平衡,因此以下将60 min解吸数据作为考察对象.关于解吸时间,将在2.2 中采用动力学进一步研究. 图2 解吸时间对Cr(Ⅵ)解吸率的影响 Fig. 2 Effect of desorption time on desorption......
dioxide, carbon monoxide, hydrogen bromide, phenol and substituent phenol are given off during the pyrolysis of waste epoxy PCBs. Key words: pyrolysis; kinetics; waste; printed circuit boards 1...J. Cent. South Univ. Technol. (2011) 18: 331-336 DOI: 10.1007/s11771-011-0700-z Pyrolysis kinetics and TG-FTIR analysis of waste epoxy printed circuit boards ZHAN Zhi-hua(湛志华), QIU Ke-qiang(丘克强......
,but it significantly enhances the hydrogen absorption and desorption kinetics performance of alloys.Moreover,variation of milling time clearly affects the hydrogen storage properties of alloys.Hydrogen... by mechanical milling.Effects of Ni content and milling time on the gaseous hydrogen storage thermodynamics and dynamics of alloys were systematically investigated.The hydrogen desorption properties......
than that of Ni-Mo electrode. The Ni-Mo-La alloy has a property of hydrogen storage materials, and its hydrogen evolution reaction is a adsorption hydrogen-hydrogen storage-desorption hydrogen process...Ni-Mo-La合金;析氢性能;电沉积 中图分类号:TQ153.2 文献标志码:A Hydrogen evolution reaction activity of electrodeposited morphous/nanocrystalline Ni-Mo-La alloy electrode GAO Cheng-hui, LI Ning......
识码:A Oxidation kinetics of NiCoCrAlYTa coating by low pressure plasma spraying ZHOU Ke-song1, LIANG Xing-hua1, 2, LIU Min1, DENG Chang-guang1 (1. Material Surface Center, Guangzhou Research... on Ni-based single crystal super-alloys by low pressure plasma spraying (LPPS). Oxidation kinetics of the coating oxidated for 200 h at three different temperatures was investigated. The results show......
applied for calculation. It is found that their hydriding kinetics notably declines, however, their hydrogen desorption kinetics conspicuously improves, with spinning rate and Y content increasing... and desorption thermodynamics and kinetics properties of Mg-Ni-based alloys, partially substituting Y and Cu for Mg and Ni respectively and melt spinning technique were applied for getting Mg25-xYxNi9 Cu(χ......